Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid

USPTO Patent Application US 2017/0362158 A1
Application Date: Dec. 21st, 2017

ABSTRACT

Processes for the purification of bio-based acrylic acid to crude and glacial acrylic acid are provided. The bio-based acrylic acid is produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures...
Application Number:
15/689,278
International Classification:
C07C 51/48 (20060101); C07C 57/04 (20060101); A61F 13/534 (20060101); B01J 27/16 (20060101); C07C 51/44 (20060101); C07C 51/377 (20060101); C07C 51/09 (20060101); B01J 37/08 (20060101); B01J 37/04 (20060101); B01J 37/00 (20060101); B01J 35/02 (20060101); B01J 27/25 (20060101); B01J 27/198 (20060101); B01J 27/195 (20060101); B01J 27/188 (20060101); B01J 27/187 (20060101); B01J 27/186 (20060101); B01J 27/185 (20060101); B01J 27/18 (20060101); C08F 2/10 (20060101); A61F 13/53 (20060101)
No Pictures Available

CLAIMS

What is claimed is:

1. A composition of crude acrylic acid comprising between about 94 wt % and about 98 wt % acrylic acid, and wherein a portion of the remaining impurities in said composition of crude acrylic acid is hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof.

DESCRIPTION

FIELD OF THE INVENTION

The present invention generally relates to the production of crude and glacial acrylic acid from bio-based acrylic acid produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof. More specifically, the invention relates to the purification of bio-based acrylic acid to crude and glacial acrylic acid using some or all...
Back to Top